[FEATURE] Add turnDurationOverride setting for custom turn duration messages

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

The showTurnDuration setting displays turn duration after responses, but there's no way to customise what it shows. Other settings like spinnerTipsEnabled have companion override settings (e.g., spinnerTipsOverride), but showTurnDuration lacks one. I often pick up the same session the next day and have no way of knowing when I last interacted.

Proposed Solution

Add a turnDurationOverride setting that accepts a format string with placeholders like sessionStartDate, sessionStartTime, sessionEndDate, and sessionEndTime alongside the duration.

Alternative Solutions

Show the current date and time by default.

Priority

Low - Nice to have

Feature Category

Configuration and settings

Use Case Example

With turnDurationOverride configured, the turn duration message would show: 03-04 18:44, Cooked for 1m 6s — giving me a timestamp alongside the duration so I can see when I left off when returning to a session later.

Additional Context

N/A